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Finding the Fourth Proportional to 163,116.79, 225,100.71 and 90,530.64

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Solution

The fourth proportional to 163,116.79, 225,100.71 and 90,530.64 is: 124,932.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,116.79 : 225,100.71 = 90,530.64 : x
  2. Step 2: Convert to fraction form
    163,116.79/225,100.71 = 90,530.64/x
  3. Step 3: Cross multiply
    163,116.79x = 225,100.71 × 90,530.64
  4. Step 4: Simplify right side
    163,116.79x = 20,378,511,340.75
  5. Step 5: Solve for x
    x = 20,378,511,340.75/163,116.79
  6. Step 6: Final answer
    x = 124,932.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.